It should be noted that vehicle manufacturers revise parts all the time as the manufacturing process evolves during the model's life cycle and bugs are continually ironed out. It also goes without saying that they don't recall vehicles for every single revision if they're not compelled to.
As a result, the most reliable purchases tend to be models that approach the end of their production cycle, which may benefit from all the latest components and revisions.
Such is the nature of the industry.
If I had my tinfoil hat on, I'd say this recall was instigated primarily to appease the vocal Chinese market - a massive, and therefore, very important market - as the number of DQ200 units affected in China stands at about 640 000 (40% of the total). In addition, Volkswagen have invested a lot of capital in China, so doing nothing may have added further risk and uncertainty on anticipated financial returns.
Despite that, I'm inclined to think this will benefit both manufacturer profits and consumer satisfaction over the long term.
Whatever their motivations, I hope this campaign will finally solve a lot of the problems on what has proved to be a very troublesome gearbox for Volkswagen, and perhaps really get the company to start looking at improving the overall mechanical quality and reliability of their vehicles.
The basic part number 0AM 325 025 refers to the mechatronics unit for the DQ200. DX and ZZZ are further identifiers which relate to a specific vehicle, engine or software configuration.
The transmission oil (G 052 171 A2 or G 052 512 A2, depending on the gearbox build date) is supposed to be drained whenever the mechatronics unit is removed from the gearbox, hence its presence on the invoice.
Once the original mechatronics unit has been removed, the hydraulic fluid is not drained by the dealer, and is returned to Volkswagen with the fluid intact. New or revised units arrive pre-filled with the required hydraulic fluid (G 004 000 M2 or otherwise). This explains why the part number for the hydraulic fluid won't appear on the invoice.
Therefore, I don't know what the part number for the new hydraulic fluid is.
The above information relates to the 35C1 campaign. I don't know what the latest campaign entails - my guess is that whatever component still has synthetic fluid in it (gearbox, mechatronics unit, or both) will be drained or replaced with mineral fluid, but again, early days.
Using Google to research a broad range of sources (rather than just the first link that appears), I have a fairly high degree of confidence to suggest that G 052 512 A2 oil is of a mineral base.
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